<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>2.不使用函数柯里化实现</title>
  </head>
  <body>
    <!-- 准备好一个容器 -->
    <div id="test"></div>

    <!-- 引入react 核心库 -->
    <script
      type="text/javascript"
      src="../../react-js/react.development.js"
    ></script>
    <!-- 引入react-dom 用于支持react操作dom -->
    <script
      type="text/javascript"
      src="../../react-js/react-dom.development.js"
    ></script>
    <!-- 引入babel 用于jsx转为js -->
    <script type="text/javascript" src="../../react-js/babel.min.js"></script>

    <script type="text/babel">
      // 创建组件
      class Login extends React.Component {
        // 初始化状态
        state = {
          username: '',
          password: '',
        };
        // 保存表单数据到状态中【高阶函数&&函数柯里化】
        saveFormData = (typeData, event) => {
          this.setState({ [typeData]: event.target.value });
        };
        // 表单提交的回调
        handleSubmit = (event) => {
          event.preventDefault();
          const { username, password } = this.state;
          alert(`你输入的用户名是${username},你输入的密码是${password}`);
        };
        render() {
          return (
            <form action='#' onSubmit={this.handleSubmit}>
              用户名：
              <input
                onChange={(event) => {
                  this.saveFormData('username', event);
                }}
                type='text'
                name='username'
              />
              密码：
              <input
                onChange={(event) => {
                  this.saveFormData('password', event);
                }}
                type='text'
                name='password'
              />
              <button>登录</button>
            </form>
          );
        }
      }
      // 渲染组件
      ReactDOM.render(<Login />, document.getElementById('test'));
    </script>
  </body>
</html>
